Q1. If 15 February 2018 was a Thursday, what was the day on 19 April 2019?
Explanation
From 15 February 2018 to 15 February 2019 there are 365 days, because 2018 was not a leap year. A gap of 365 days shifts the weekday by one day, so 15 February 2019 was Friday. From 15 February 2019 to 19 April 2019, the extra days are 63, which is exactly divisible by 7. Hence the weekday does not change. Therefore, 19 April 2019 was Friday, not Thursday, Saturday or Sunday.
